Buffing and polishing machine



March 23, 1954 L. H. BURNHAM 2,672,634

BUFFING AND POLISHING MACHINE Filed Jan. 19, 1950 2 Sheets-Sheet l L ath. Burn/7am INVENTOR.

March 23, 1954 H. BURNHAM 2,672,634

BUFFING AND POLISHING MACHINE Filed Jan. 19, 1950 2 Sheets-Sheet 2Fig.8.

ii WWW Lee h. Bum/mm INVENTOR.

By zsm Patented Mar. 23, 1954 v 'jBUm'NG POLISHING MACHINE .Lee H.,Burnham, Leesisummit; Mg. ilAPPliWfiwfla-nuary Ser-idl1No;1139,512

lzclaims. (01.415448 This invention relateseto-new and .-usefu1-imhaving an open bottom and gamma Wang. as-rprovements: inwlouffinaandpolishing machine Avhollowislot-ted iiortioneor zmotormousin l4. I lanhe mrimary Object .of; the present invention :asdispesedaeccentrica11y.. mes from 18?) provide a bufiing and-polishing-machineinv-the ;:,upper wall :I2;iand- 1spreferablyzigintegmlly cluding arotarvmember; va surface treatingihead 5 formed' with the upper wall:12.

detachably secured touandnrotatablewith the Arsuitablevelectric -motor-is mountedviwithin .member and a-novetand improved manuallyoptithehollowportion-Mandi aconneetedethrou heratedmeans-:forquicklys-and readily-detaching rany.suitablerldrive"means,,ssuclrtas'rgears;t0 a .:the, head from the rotarymemberto permit anrotarymember I 6 Y ithaizis .i ehc1osec1== within *the1* other -head to re lace the first Y head. m -casinew-l 0 for rotationr AISWitChTCI8 0011131015 the i A-zstill-furtherr-aimeof the. presentinvention is circuit to the motoriwrthinthe portion --l.i4 i;and is toprovide a buflingl vand.polishing.maohine of the r mounted 1 upona1hollow'support oirswitch teasing aforementioned characterthat isextremely small i2 0 forming a unitary martofiatthe mainxeasing "I 0---.and "compact-11in: structure, erelatively light in The rotary-memberl-finiscprovtidedwwi-th awer- :-=-wei.ght, strong randreliablein use,neat and atlatioa'lrborefi having.;a:-reduced upperportion tractive inflppearanceaeificientrand durable in that registers withvan aperture'zsiiinj-lthe'jupper operation,- relatively inexpensive to manufacture,wall 1210f the casingtzlfl: .iTheainner-wahiof the and otherwise rwelladapted for. the purposes for horse =22; is formedwithxa continuouseham'iels'28 which the-sameds intended, :anda-pair "of-diametricallyQnposed--rlgevwa s 3ll. -Otherobiects-and-radvantages reside in the de--'-,Theynumeralru-:represents -.a-w-surtace::treating stailsfofrconstructionand operation as more fully headorhrush :head,havingithesusualrbrist1es 34. hereinafter describedand-claimemereference be- -A-posts36.-rises from a.base-BBrOnfiIiheJHDDCr'wall 1 ring; had to the: accompanying :drawings,forming of. the headk324andrinc1udes a'areducedzupner end ppartthereof; wherein slikesnumerals refer to like"".DOItiOIIi4.FfOIhreceptionjn-the reduced portion 24 -'partsthroughout, and in which: 25* of the 1 bore: 22. A pair potdiametrica11yropn0 Figure l isasideelevationaltview oi theipresentw:iheys'ronlugs421cmtherpostrtfizto,itheebaseitand'-;inventionshowingtherswingablerhandle.attached are adapted to enterthe keyways rforirotation thereto, and with :parts'of the machinerbroken 1-of the hQadT3ZWWith$116 memberelfi. J awayfort.:the:convenienoe ofnexplanation; t-Mea-ns istprovidedeforreleasahly securing. the .Figure 2 is a plansview-of Figure1; 1 head:32etothe rotary member J5.- 'I'hisameans Figure 3-is asideelevationalviewufthe lpresent consists of a teat or protuberance:onsthe'post imachine andshowing a'stationary handlemoune -r35;:that'wi1lsnapwinto:thenchannel: nvader-the post ed thereon; 1 -35isinserted into-the-bore:22. "Figure 471s a plan view of Figure 3;Additionalsmeans is-:-providedillorireleasine the Figure 5 is afragmentary perspective view of ar-post filionrithe-i'rotarymemberzandrmoreparticuthe; surface treatina head and" more particularlylarlyrrorcingthe protuberance-M- i romthechanthe attaching post'of.thelsurface. treating head; rzneltzfli .zlhis'ilatest ,meansrisvshownbestin-E'ig- Figures is an enlarged sectional view taken ure 7 of thedrawingsanduncludes:azrodMi-havsubstantially on the planeof sectionlinedi -fi of :z:ing.lateralaprojectiomd 8rand-I50 at its ends-.1 The tFi ure 1; 4i) lproziectioniimterminates:in'afin erigripwii :and IFigure? is aperspectiveview of the-releasing ;-.-;-the5projeotion -"5.0is: also providedzwithaa eamrsurmeans used in--the--present invention=per se; -a;:ufaceri hioraidingiagairistlthe LiBDBrtWitlL- lkoi theFigure 8 -isanenlarged dtail sectional view iv'ecasingllfl. takensubstantially-on the pl'ane of eaction line t "Ffherrocflflais,jgurnaledtfgligljotafiQnfplfithe511p- 8-8 of Figure,4; p'ortt20withstheiprogiectionaflfleexposndzfrom the li'igure 9 is an elevationalvieit taken substansupport 20 and with the projoetionetfledisposed Itially .on the pla eofrseotionline 9- 9f6fFigureix-withimtheisupportitllf fl'herrod alfizisrretained in .18; and, 1 'fjposition-.iinzthesupport mbyia'nv suitableimeans Figure "10 is anenlarged 'detail sectional view as alrlug-rifiiomtherodnflfioandaspacedsirom taken substantiallypn'theplane of'se'ction linelimithes-zprojeotionwill; This lugtfunctionsiasz ar-stop III-Ill ofFigure 1. to limit sliding movement of the rod relative to Referring nowto the drawings in detail, the support and may assume the form of a setwherein for thepurpose of illustration, there is screw.- v.

disclosed a preferred embodiment of the present The projection 48overlies the upper extremityinvention, the numeral l0 represents acasing of the portion 40 which extends upwardly through the aperture 26,so that as the finger grip 52 is pressed toward the upper wall [2 of thecasing Hi, the cam surface 54, riding upon the wall 12 will rockablysupport the rod 46 as the same is retated, whereby the projection 46will contact the upper end of portion 40 to force the post downwardlyand the protuberance 44 from the channel 28, thereby separating the head32 from the member 16. The cam surface 54 binds against the wall l2during upward movement of the finger gripping portion 52 which preventsaccidental swinging movement of the rod 46 during use of the apparatus.

Two types of handles are employed with the present machine. The firsttype of handle is indicated by the numeral 58 and includes a shank 60having a bifurcated portion 62 the ends of which are integrally formedwith sockets 64 that receive a pair of diametrically opposed lugs 66 onthe portion it.

Looking dogs 68 are pivoted within the sockets 64 and springs 10,mounted the sockets 64, urge the dogs 68 against the lugs 66 and therebyretain the lugs 86 between the dogs 68 and abutments t2 internally ofthe sockets 6 2. The

dogs 86 include finger gripping pieces 14 that are slidably received inslots 16 in the upper walls of the sockets so that the dogs 68 can bemoved, against action of the springs 10, to remove the handle 58 fromthe portion M.

The surfaces of the abutments i2 and the dogs 68 contacting the lugs 65are concave and the lugs 66 are cylindrical to permit pivotal movementof the handle 52 relative to the portion it with the lugs 66 functioningas pivots.

The second type of handle is indicated by the numeral 18 and includes apair of arcuate grips 86 that are joined at one of their ends by a crosspiece 82 having a depending portion 84 that supports a bolt 86. The bolt86 is threaded into a boss 88 rising from the casing ID to detachablysecure the handle 18 relative to the casing.

The grips 88 terminate in sockets 90 for receiving the lugs 66 and thelugs 56 are held in the sockets 98 when the fastener 86 is threaded intothe boss 88.

Obviously, either of the handles 58 or 18 may be used depending uponwhether the user desires to employ the machine with a long lever arm oras a hand gripped brush.

In view of the foregoing description taken in conjunction with theaccompanying drawings it is believed that a clear understanding of theconstruction, operation and advantages of the device will be quiteapparent to those skilled in this art. A more detailed description isaccordingly deemed unnecessary.

It is to be understood, however, that even though there is herein shownand described a preferred-embodiment of the invention the same issusceptible to certain changes fully comprehended by the spirit of theinvention as herein described and the scope of the appended claims.

Having described the invention, what is claimed as new is:

1. A buffing and polishing machine comprising a casing, a rotatablemember mounted in the casing and having a central opening, a surfacetreating head having an upstanding post received in said centralopening, means releasably securing the post to the member for rotationof the head with the member, said casing including an upper wall havingan aperture receiving the upper end of said post, a support rising fromthe casing, a horizontal rod rotatably supported by the support anddisposed perpendicular to the post, means secured to said rod preventingsliding movement of the rod relative to the support, said rod includingan inner end positioned in the support and an outer end projectingoutwardly from the support, a first lateral projection on the inner endof said rod extending transversely across the upper end of said post, asecond lateral projection on the outer end of said rod including a camsurface contacting the upper wall of said casing, and a finger gripintegrally formed with said second lateral projection and manuallyforced against the upper wall of said casing to rotate said rod andcause said first lateral projection to engage and urge the postdownwardly, said cam surface binding against said upper wall of saidcasing when the finger grip is raised above said upper wall.

2. A bufiing and polishing machine comprising a casing having an openbottom, a rotatable member disposed in the casing and having a centralopening, a surface treating head having an upstanding post extendingupwardly through the opening, means yieldingly releasably securing thepost to the member for rotating of the head with the member, said headhaving bristles projecting downwardly from the open bottom of saidcasing, a housing fixed to and extending upwardly from the casing, anelectric motor in the housing operatively connected to the member forrotating the member and the head, a switch casing forming a part of thefirst named casing and extending upwardly from the central portion ofsaid first named casing, a switch in the casing electrically connectedto the motor, said switch casing having a pair of spaced walls withregistering horizontal apertures therein, a horizontal rod rotatable insaid apertures and disposed over the upper end of the post, a stopelement carried by the rod engaging the switch casing to restrictsliding of the rod relative to the switch casing, said rod having alateral projection intermediate its ends adapted to engage and lower thepost as the rod is rotated, and a finger grip projecting laterally fromthe rod and disposed exterior-1y of the switch casing for rotating therod.

LEE H. BURNI-IAM.

References Cited in the file of this patent UNITED STATES PATENTS FranceJan. 29, 1929

